Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - Additional Information (Detail)

v3.21.2
Related Party Transactions - Additional Information (Detail)
C$ in Millions, $ in Millions
9 Months Ended 12 Months Ended
Feb. 05, 2019
USD ($)
Jun. 30, 2017
USD ($)
Sep. 30, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2020
NIO (C$)
Jun. 30, 2017
NIO (C$)
Revolving Credit Facility [Member] | Hadley Ford [Member]            
Related Party Transaction [Line Items]            
Line of credit accrued interest rate   2.50%        
Receivable with imputed interest due date   Jun. 30, 2021        
Line of Credit outstanding Amount       $ 0.4 C$ 0.5  
Line of credit facility maximum borrowing capacity   $ 0.4       C$ 0.5
Remaining line of credit amount was offset by additional compensation       0.5    
Revolving Credit Facility [Member] | Hadley Ford [Member] | Termination Agreement [Member]            
Related Party Transaction [Line Items]            
Line of credit amount partially offset against compensation   $ 0.3        
MPX [Member] | Elizabeth Stavola [Member]            
Related Party Transaction [Line Items]            
Accounts recievable due from a related party $ 0.7          
MPX [Member] | Revolving Credit Facility [Member]            
Related Party Transaction [Line Items]            
Related party receivable was converted into a loan facility $ 10.0          
Line of credit accrued interest rate 16.00%          
Receivable with imputed interest due date Dec. 31, 2021          
Line of Credit outstanding Amount     $ 4.2 3.2    
Line of Credit accrued interest     $ 0.7 $ 0.3